E08 displayed and unit regenerates too frequently or not at all based on usage

Safety first: No internal electrical work is required for this procedure, but do not open the control housing while powered if you are not trained.

Step-by-step:

• Confirm water hardness: Test raw water hardness with a test kit or obtain data from your water supplier.
• Check programming: Enter the AquaUnique installer menu and verify hardness, capacity (grains or m³), reserve, and meter size match your model and water conditions.
• Correct settings: Adjust values according to the installation manual. Save changes and exit the menu.
• Factory reset if needed: If settings appear corrupted, perform a factory reset (if available) and reprogram from scratch.

When to call a technician: If E08 persists after correct programming, the meter input or control board may be defective and require professional diagnosis.